2017
DOI: 10.2207/qjjws.35.137s
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Fast Prediction of Welding Distortion of Large Structures using Inherent Deformation Database and Comparison with Measurement

Abstract: It has been reported that welding distortion can be well reproduced using inherent deformation by performing the simple elastic finite element analysis. To efficiently predict the welding distortion of large structures, the inherent deformation database in the design space of the shrinkage and bending control parameters for each basic welded joint was established through experimental measurements and nonlinear transient simulations by thermal elastoplastic FEM. Then, when welding conditions and constraint cond… Show more

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Cited by 10 publications
(5 citation statements)
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“…Phase transformation strain is relatively small, which can be ignored to simplify the calculation. [ 29 ] Therefore, the inherent strain is calculated byεInherent=εPlasticwhere εInherent is the inherent strain.…”
Section: Efficient Calculation Methods and Finite Element Modelmentioning
confidence: 99%
“…Phase transformation strain is relatively small, which can be ignored to simplify the calculation. [ 29 ] Therefore, the inherent strain is calculated byεInherent=εPlasticwhere εInherent is the inherent strain.…”
Section: Efficient Calculation Methods and Finite Element Modelmentioning
confidence: 99%
“…Likewise, an innovative scheme was proposed to compute an effective computation zone as a boundary condition to save calculation time up to 10 4 of the traditional FEM scheme [ 24 ]. Ma et al [ 25 ] presented a computationally efficient parallel computing program “JWRIAN-hybrid” based on a combination of an accelerated explicit and implicit FEM scheme for temperature, residual stress, and distortion prediction in welding structures [ 25 ]. The proposed hybrid algorithm has been implemented for welding residual stress estimation previously [ 26 ].…”
Section: Introductionmentioning
confidence: 99%
“…When using ISM to predict welding deformation in large structural component, the inherent strain of each joint should be predetermined based on the type of joint, plate thickness and welding process parameters of the large structural component [21]. Currently, inherent strains are often obtained using experimental measurements and based on the established inherent deformation database as well as by calculating the inherent strain of a typical welded joint using the TEP-FEM [22,23]. In this study, the TEP-FEM was chosen to obtain the inherent strain.…”
Section: Introducementioning
confidence: 99%